The Metro stop closest to BRFAA is the Katehaki stop. It is on the blue line which goes to and from "Ag. Marina" and "Doukissis Plakentias". (download Athens Metro Map). Once you have reached the Katehaki station, you can reach BRFAA by foot. The closest path is to go through the "Sotiria Hospital" which is on Messogeion Avenue (see map below)

+ Attiki Odos

Head east and get off on "Y2 Papagou / Υ2 Παπάγου" exit.

Once you get off the exit, follow the sign that says "Papagou / Παπάγου" onto "Anastaseos / Αναστάσεως" Street.